USNO Sigma vs 2MASS sigma
Distribution of USNO sigmas with filter type (0-Narrow band, 1-Medium, 2-Wide)
Distribution of 2MASS sigmas with filter type (0-Narrow band, 1-Medium, 2-Wide)
Distribution of USNO sigmas vs Number of sources used.
Distribution of 2MASS sigmas vs Number of sources used.
Distribution of USNO sigmas ith exposure time.
Distribution of 2MASS sigmas ith exposure time.
Distribution of Number of sources used vs number of USNO sources available.
Distribution of Number of sources used vs number of 2MASS sources available.